EP 0023447 B1 19830406 - LIQUID CRYSTAL DISPLAY DEVICE AND SUBSCRIBER SET COMPRISING SUCH A DEVICE
Title (en)
LIQUID CRYSTAL DISPLAY DEVICE AND SUBSCRIBER SET COMPRISING SUCH A DEVICE
Publication
Application
Priority
FR 7919426 A 19790727
Abstract (en)
[origin: US4390244A] A liquid crystal visual display with a liquid crystal layer between two plates and resistive lines between one of the plates and the liquid crystal layer for heating the crystal to produce a display. The thermal diffusivity of the plate supporting the lines is below a value making possible viewing with the naked eye, for example 2x10-2 cm2/s.
IPC 1-7
IPC 8 full level
G02F 1/133 (2006.01); G09F 9/30 (2006.01)
CPC (source: EP US)
G02F 1/132 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT NL SE
DOCDB simple family (publication)
EP 0023447 A1 19810204; EP 0023447 B1 19830406; CA 1178700 A 19841127; DE 3062622 D1 19830511; FR 2462755 A1 19810213; FR 2462755 B1 19820903; JP S5621184 A 19810227; US 4390244 A 19830628
DOCDB simple family (application)
EP 80401076 A 19800718; CA 357016 A 19800725; DE 3062622 T 19800718; FR 7919426 A 19790727; JP 10232880 A 19800725; US 17140880 A 19800723